We should discuss enabling the following php-cs-fixer settings for all maintained packages:

• native_function_invocation
• native_constant_invocation

Pros:

• advocates recommended practice,
• easy to control as it's a cs-fixer setting.

Cons:

• right now leads to inconsistency as we rather avoid `\` prefixes in favor of use ... imports, however php-cs-fixer does not provide this directly.

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